<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>Netty 实时通讯</title>
</head>
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script>
<script>
    var socket;
    function openSocket() {
        if(typeof(WebSocket) == "undefined") {
            console.log("您的浏览器不支持WebSocket");
        }else{
            console.log("您的浏览器支持WebSocket");
            //实现化WebSocket对象，指定要连接的服务器地址与端口  建立连接
            //等同于socket = new WebSocket("ws://localhost:8888/websocket");
            var socketUrl="http://localhost:8888/websocket";
            socketUrl=socketUrl.replace("https","ws").replace("http","ws");
            console.log(socketUrl)
            socket = new WebSocket(socketUrl);
            //打开事件
            socket.onopen = function() {
                console.log("websocket已打开");
                //socket.send("这是来自客户端的消息" + location.href + new Date());
            };
            //获得消息事件
            socket.onmessage = function(msg) {
                console.log("接收消息"+msg.data);
                var receiveMsg=$("#receiveMsg");
                var html=receiveMsg.html();
                receiveMsg.html(html+"<br/>"+msg.data);

            };
            //关闭事件
            socket.onclose = function() {
                console.log("websocket已关闭");
            };
            //发生了错误事件
            socket.onerror = function() {
                console.log("websocket发生了错误");
            }
        }
    }
    function sendMessage() {
        if(typeof(WebSocket) == "undefined") {
            console.log("您的浏览器不支持WebSocket");
        }else {
            console.log("您的浏览器支持WebSocket");
            var msgContent=$("#msgContent").val();
            socket.send(msgContent);
        }
    }
    $(function(){
        openSocket();
    })
</script>
<body>
    发送消息：
    <input type="text" id="msgContent">
    <input type="button" value="发送消息" onclick="sendMessage()">
    <hr>
    接收消息：
    <div id="receiveMsg" ></div>
</body>

</html>

